I think you will do better with a Trick Flow kit. The heads are a legitamately better design than the Edelbrock heads. You can get away without a tune with a mild cam. Any of those 350hp kits, and you care going to need a tune. Keep in mind, if you have an auto trans, it's still going to run 15.0 if you put all that power through a stock trans. To get it to move, you're going to need to do trans pak and a converter. Might as well rebuild the transmission while you have it apart. The converter is going to be key in making the car streetable.
Kurt